Temperature dependence of the first-order Raman scattering in GaS layered crystals

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2000-01-01

Author

Hasanlı, Nızamı
Ozkan, H
Kocabas, C

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The temperature dependence (15-293 K) of the six Raman-active mode frequencies and linewidths in gallium sulfide has been measured in the frequency range from 15 to 380 cm(-1). We observed softening and broadening of the optical phonon lines with increasing temperature. Comparison between the experimental data and theories of the shift and broadening of the interlayer and intralayer phonon lines during the heating of the crystal showed that the experimental dependencies can be explained by the contributions from thermal expansion and lattice anharmonicity. The pure-temperature contribution (phonon-phonon coupling) is due to three- and four-phonon processes.

Subject Keywords

Semiconductors, Optical properties, Inelastic light scattering

URI

https://hdl.handle.net/11511/40005

Journal

SOLID STATE COMMUNICATIONS

DOI

https://doi.org/10.1016/s0038-1098(00)00292-1

Collections

Department of Physics, Article

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Temperature dependence of the first-order Raman scattering in GaS layered crystal (vol 116, pg 147, 2000) Hasanlı, Nızamı; Ozkan, H; Kocabas, C (2001-01-01) The temperature dependence (15±293 K) of the six Raman-active mode frequencies and linewitdhs in gallium sulÆde hasbeen measured in the frequency range from 15 to 380 cm21. We observed softening and broadening of the optical phonon lineswith increasing temperature. Comparison between the experimental data and theories of the shift and broadening of theinterlayer and intralayer phonon lines during the heating of the crystal showed that the experimental dependencies can beexplained by the c...
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Citation Formats

N. Hasanlı, H. Ozkan, and C. Kocabas, “Temperature dependence of the first-order Raman scattering in GaS layered crystals,” SOLID STATE COMMUNICATIONS, pp. 147–151, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40005.